seiichi horie
Synthesizer based on the Unzen / Nucleo F746ZG
Dependencies: amakusa mbed-dsp mbed shimabara ukifune unzen_nucleo_f746
Fork of
skeleton_unzen_nucleo_f746
by 
seiichi horie
雲仙フレームワークのテストとして作っているプロジェクトです。中身はどんどん変っていきます。 説明はDSP空挺団の「シンセサイザー」カテゴリーを参照してください。初回は「ドッグフードを食べる」です。
Revision 29:8ee84bda128c, committed 2017-02-18
- Comitter:
- shorie
- Date:
- Sat Feb 18 04:37:19 2017 +0000
- Parent:
- 28:547f19ed6f67
- Commit message:
- Limiter function is confirmed. SV filter ignored bug was fixed.
Changed in this revision
diff -r 547f19ed6f67 -r 8ee84bda128c amakusa.lib --- a/amakusa.lib Sat Feb 11 07:44:56 2017 +0000 +++ b/amakusa.lib Sat Feb 18 04:37:19 2017 +0000 @@ -1,1 +1,1 @@ -https://developer.mbed.org/users/shorie/code/amakusa/#621c15c3be14 +https://developer.mbed.org/users/shorie/code/amakusa/#1fa224c83cfa
diff -r 547f19ed6f67 -r 8ee84bda128c monophonic.cpp
--- a/monophonic.cpp Sat Feb 11 07:44:56 2017 +0000
+++ b/monophonic.cpp Sat Feb 18 04:37:19 2017 +0000
@@ -11,6 +11,7 @@
this->dc_blocker = new DCBlocker( this->block_size );
this->sv_filter = new SVFilter( this->block_size );
this->eg = new EG( this->block_size );
+ this->limitter = new amakusa::LimitterLinAtan( this->block_size );
work_buf_a = new float32_t[block_size];
work_buf_b = new float32_t[block_size];
@@ -24,6 +25,7 @@
delete this->dc_blocker;
delete this->sv_filter;
delete this->eg;
+ delete this->limitter;
delete[] work_buf_a;
delete[] work_buf_b;
@@ -43,14 +45,17 @@
this->dc_blocker->run( work_buf_a, work_buf_b );
// applying filter.
- this->sv_filter->run( work_buf_b, out_buffer );
+ this->sv_filter->run( work_buf_b, work_buf_a );
// generate envelope
- this->eg->run( work_buf_a );
+ this->eg->run( work_buf_b );
// apply envelope
for ( int i= 0; i< this->block_size; i++ )
- out_buffer[ i ] *= work_buf_a[ i ];
+ work_buf_b[ i ] *= work_buf_a[ i ];
+
+ // apply amplitude limitter
+ this->limitter->run( work_buf_b, out_buffer );
} // End of run()
diff -r 547f19ed6f67 -r 8ee84bda128c signal_processing.h
--- a/signal_processing.h Sat Feb 11 07:44:56 2017 +0000
+++ b/signal_processing.h Sat Feb 18 04:37:19 2017 +0000
@@ -116,6 +116,7 @@
DCBlocker *dc_blocker;
SVFilter *sv_filter;
EG *eg;
+ amakusa::LimitterLinAtan *limitter;
float *work_buf_a, *work_buf_b;
int32_t block_size;
};